Draft coupling



APPLICATIN FILED MAY 1l, 1920.

Pfff 1.4

' v y 1o 1. LOPEZ. l DRAFT couPLlNG'.

Patented Mar. 7, 1922.

' 31a/vento@ 4 Gwomwg Unire orrics.

JOAQUIN LOPEZ, 0F ANSONIA., CONNECTICUT.

DRAFT COUPLNG.

To all whom t may concern.'

Be it known that l, JOAQUIN LOPEZ, a citi Zen ot Cuba, Habana, residing at Ansonia, in the county of N ew Haven and State ont (loir necticut, have invented new and useful iniprovenients in Drat't Couplings, ot which the following is a specification.

This invention relates to draft couplings and has for its object the provision oit a coupling adapted ttor interposition between the device or object to be drawn and the device which effects the drawing, the purpose being to provide spring shocl absorbing means whereby to prevent sudden strain.

An important object is the provision ot a device ot this character which includes an enclosing shell which forms a housing tor the shock absorbing; spring, the device being turtherinore so constructed as to provide shoulders which engage when the spring is compresse(x to its maximum degree.

in additional object is the provision of a device ot this character which will be siniple and inexpensive in manufact-ure, highly eilicient in use, durable in service, and a gein eral improvement in the art.

lith the above and other Aobjects and advantages in view, the invention consists in the details ot construction to be hereinafter more tully described and claimed, and illustrated in the accompanying' drawings in which Figure 1 is a side elevation oi the device,

.Figure 2 is a longitudinal sectional view with the parts in norrnal position,

Figure 3 is a similar view showing the spring fully corni'iressed, and

Figure d is a central cross sectional view.

lle'erringmore particularly to the drawings, the numeral 1() designa es one porti' n ol" the device which is 'formed as a cylindrical shell 11 provided in its periphery with a plurality of openings 12,

having` one end open and internally three-.dedA` and having its other end closed, as shown et 13, and tornied with an eye or loop 1l adapted tor reime/ction ot a chain or rope. The open end of the shell 11 is closed by an externally threa led plugl 15 screwed thereinto and provided with a recess 16 and a hole 17.

Disposed within the shell 11 is a cup-like ineinber 18 having` a threaded hole 19 and a recess 20. The numeral 21 designates rod which is slidable through the hole 17 and which is threaded into the hole 19 and Specification of Letters Patent.

Patented Mar. 7, 1922. 192e. sel-iai No. 380,590.

the outer end of this rod is formed with a hook 22 adapted tor connection ot' a pulling chain or rope. A coil spring 23 surrounds the rod 21 and has its end portions engaged within the recesses 1G and 20.

in the use oi the device it will be seen that it is interposed between drawing and drawn objects or is interposed in -a dra-ft chain or cable, or the like, the eye ltand hook 22 'in'oviding` for the connection. l/Vhen strain is placed upon the draft device, chain or rope, it will be seen that the rod 21 and cup niernber 18 will inove longitudinally within the shell against the resistance ot the spring 23, thereby taking up or absorbing the strain or shock. When the spring 23 is fully conipressed, as might occur in the event of a heavy strain, it will be seen that the open end ot the cup ineinber 18 will engage against the inner end or" the plug 15.

From the foregoing description and a study ot the drawings it will be apparent that l have thus provided an inexpensive, simple, and yetk highly etlieient shock absorbing device for taking up the strain in draft connections.

lllhile l have shown and described the preferred embodiment ot my invention, it is oit course to be understood that 1 reserve the right to malte such changes in the torni, construction, and arrangement of parts as will not depart troni the spirit of the invention or the scope oit the subjoined claim.

Having thus described my invention, I claim:

A device ot the character described coniprising a body formed as a cylindrical shell open and internally threaded at one end and having; its other end closed and formed with an attaching eye, a plug; threaded into and closing the open end ot said body and provided with a recess and a central hole, a cup nieniber slidabler within said body and formed with a recess and a central threaded hole, a rod slidable through said .first nained hole and having one end screwed into said three ded hole ot the cup and having its other end rorined as an attaching hook, andra coil spring surrounding' said rod and havingits ends 'eating within said 'c-cesses. the open en-:l the cup being' engageable with the plugiio as a stop.

1n testimony whereof l aliix my signature.

JOAQUIN LOPEZ. 

